The data to the right shows the number of graduating students with business majors at a university over the last 15 years.

271   265   260  254

249   243    238   232

221   216     209   203

190   181     173 

a. Construct a box-and-whisker plot for this data. b. Identify the five-number summary. 

b) The five-number summary is ____,____,____,_____,____ ?